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Oval|Lab Grown|IGI

0.51ct I SI1 Oval Lab Grown Diamond

ID • I/SI1 • IGI LG447001122

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG447001122

Diamond specifications and retailer prices

From $274 USD
As of October 29, 2026
Save $1,096 USD (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,370 USD at MOH London · As of October 29, 2026
View at MOH London

About this 0.51ct lab-grown oval diamond

This 0.51ct lab-grown oval sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG447001122 or 447001122. Listed at 10 retailers as of October 29, 2026, with prices from $274 to $1,370, a $1,096 spread on the same certified stone. MOH London lists it at $1,370. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.51
Carat
I
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle31.7°
Pavilion angle42.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG447001122
Dimensions6.23 × 4.66 × 2.86 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
6.23 mm4.66 mm0.51 ctI / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG447001122
Side View
Table 60.5%Crown 31.7°Girdle: STK-THKPavilion 42.1°Culet: NoneDepth 61.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $1,370 USD|Low: $218 USD|High: $1,380 USD|Avg: $657 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 29, 2026
Retailer 6$274 USD
Retailer 10$307 USD
Retailer 8$340 USD
Retailer 11$340 USD
Retailer 7$360 USD
Retailer 12$500 USD
Retailer 9$564 USD
Retailer 2$630 USD
Retailer 3$693 USD
Retailer 5$1,045 USD
Retailer 4$1,368 USD
MOH London$1,370 USD

19 data points across 12 retailers

10 retailers$274 USD to $1,370 USD

A
Cheapest Retailer
-
$274 USD
A
Retailer 2
-
$307 USD
View
Final sale: no returns
A
Retailer 3
-
$318 USD
View
B+
Retailer 4
-
$340 USD
View
B+
Retailer 5
-
$340 USD
View
B+
Retailer 6
-
$360 USD
View
B
Retailer 7
-
$564 USD
View
B
Retailer 8
-
$1,045 USD
View
B
Retailer 9
-
$1,094 USD
View
Most Expensive
B
MOH London
LG447001122 · Oct 29
$1,370 USD
£1,079 GBP
View
9 more retailers have this diamond
Prices start from $274 USDSave up to $1,096 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
0.51ct Oval
$274 USD